A method for verifying the correct formation of the beads in a process and a plant for building tyres for vehicle wheels, includes: loading a plurality of annular anchoring structures in a storage, disposing them in two groups separated by an opening; positioning a building drum provided with a carcass sleeve in a tyre bead-forming machine; picking up two of the annular anchoring structures from the storage and loading them on the tyre bead-forming machine. In a work area of the tyre bead-forming machine, on each of two axially opposite zones of the carcass sleeve, a respective annular anchoring structure is fit and each of the abovementioned zones is turned up around the respective annular anchoring structure to form the beads. The aforesaid opening allows an operator to conduct a visual inspection of the work area and/or access the work area during the entire work cycle of the machine.

A plant for building tyres for vehicle wheels includes a gripping ring arranged in a fixed reference position. A first stage building line defines a closed first-stage path for the movement of a plurality of building drums and an open first-stage path for building and moving carcass sleeves being processed. A second stage building line defines a closed second-stage path for the movement of a plurality of auxiliary drums and an open second-stage path for building and moving a plurality of outer sleeves being processed. The open second-stage path and the open first-stage path terminate at the gripping ring configured for carrying out a radially outer contrast function during the shaping of a first carcass sleeve being processed and the assembly thereof with a first outer sleeve being processed.

Method for controlling the feed of semifinished products in a tyre building process, said method comprising: feeding a semifinished product (10) into a building station (30) adapted to build, through said semifinished product (10), a structural component of a tyre; performing, in an acquisition zone (AZ), a verification to verify the presence of at least one defect of said semifinished product (10); generating a notification signal (NS) as a function of said verification; activating, as a function of said notification signal (NS), a discard device (60), configured for discarding at least one portion of said semifinished product (10) comprising said at least one defect.

An injection molded composite comprising a first bonding surface of a diene rubber composition bonded to a second bonding surface of a polar thermoplastic elastomer composition. There may be no more than 25% of the bonding surfaces having an adhesive applied to them or alternatively, no adhesive is applied. Furthermore, the polar thermoplastic elastomer composition was injected against the first bonding surface to form the second bonding surface and the first bonding surface has an active halogen moiety.

A plant for building tyres, includes: a shaping work station configured for receiving a carcass sleeve; at least one radially expandable/contractible toroidal forming drum engageable in the shaping work station; at least one work station configured for building at least one component of a crown structure on a radially external surface of a tyre being processed, defined starting from the carcass sleeve that is shaped and coupled to the forming drum; transfer devices configured for moving said forming drum along a closed-loop completion path and arranging it in proximity to the work station in order to obtain a green tyre, the closed-loop completion path being extended from an initial work station to a final work station coinciding with the shaping work station; and a pick-up device configured for picking up said green tyre decoupled from the respective forming drum.

A fully automated bead filler production line system and a fully automated bead filler molding and attaching method, implementing highly efficient production of bead filler in order to solve the problem in traditional production lines of large occupied area and low efficiency. To achieve said goal, the solution is to provide a fully automated bead filler production line system, comprising: a bead filler molding processing section, a functional auxiliary section, a filler and bead molding processing section, and automated material flow sections. The bead filler molding processing section, the functional auxiliary section, and the filler and bead molding processing section are sequentially linked, and two material flow sections are provided, on either side of the filler and bead molding processing system respectively.

Method and plant for producing tyres for vehicle wheels in which: each vulcanizer (30) of a plurality of vulcanizers (30) is associated with a respective pick-up logic of green tyres from at least one storage area (20) of green tyres; upon each request to vulcanize a green tyre in a vulcanizer (30) of the plurality of vulcanizers (30), the pick-up logic associated with said vulcanizer (30) is applied to select and pick up a green tyre from the storage area (20); the respective pick-up logic associated with each vulcanizer (30) comprises a first pick-up rule of green tyres from the storage area (20) and, for at least one of the plurality of vulcanizers (30), the first pick-up rule is changed into at least one second pick-up rule at least once during the production in the plant (1) of at least one lot of tyres.

The invention discloses a tire building device and a tire building method. The tire building device includes a lateral-longitudinal-orthogonal 1 rail unit, a transferring ring, a carcass application unit, a bead placement unit, a belt application unit, a building unit, a shaping unit, and a tire unloading mechanism; the lateral and longitudinal orthogonal rail unit divides the tire building device into four areas, and also establishes the connection between the units through the transferring ring. The tire building method, including: 1) adhere the bead and tire carcass compound and then sent to the building unit; 2) send the belt compound to the building unit, 3) compound the carcass compound and belt compound into a carcass and sent to the shaping unit; 4) wind the carcass around the tread to form a green tire and sends it to the tire unloading mechanism for disassembly.

The invention relates to a supply installation (22) for a site (10) for producing rubber products from rubber blocks of rubber mixtures of predetermined weight and volume, characterized in that the supply installation includes: an input station where the supply installation performs a process of entry of empty bins (B.sub.V) for receiving, during a picking process, rubber blocks identified to satisfy a rubber product production campaign; a discharge station where the supply installation performs a process of discharging full bins (B.sub.P) containing the picked rubber blocks; a supply means that manages the transport of the empty bins and the full bins to the supply installation; and a picking station that performs a process of picking the rubber blocks grouped in a container according to the status of the current rubber product production campaign.

A plant for building tyres of at least two different models for vehicle wheels, includes at least a tyre building line, which in turn, includes: a plurality of work stations arranged according to a sequential series, each work station being adapted for building at least one structural component of each tyre and assembling at least one elementary component; at least one handling device for the tyres being processed on the respective forming supports associated to each work station; and at least one transfer device adapted for transferring the tyre being processed on its forming support from any first work station of the sequential series to any other second work station not adjacent thereto of the sequential series, so that the tyre being processed on its forming support only passes in the first and second work stations.